Otto Ernst

Otto Lilienthal makes one of his last flights Anonymous

Otto Muller Playing Chess, 1913 Ernst Ludwig Kirchner

Portrait of Otto von Bismark Anonymous

Otto Lilienthal, German aeronaut, early 20th century Unknown

Otto von Bismarck, vers 1890 Franz Seraph von Lenbach

Otto von Bismarck Franz Seraph von Lenbach

Nikolaus Otto Anonymous

Otto von Guericke, German inventor, engineer and physicist, 1672 Unknown

Portrait of Otto von Bismarck Anonymous

Otto von Bismarck Carl Ludwig Friedrich Becker

Prince Otto von Bismarck, 1884 Franz Seraph von Lenbach

Otto von Bismarck, c.1850 German School

Erich Heckel and Otto Mueller playing Chess, 1913 Anonymous

The Painter Otto Eckmann 1897 Lovis Corinth

Otto Salzer, 1905(?) Unknown

Youthful portrait of the young King Otto Greek School

Otto von Bismarck as a Student, 1833 Philipp Petri

The Stadtbahn Pavilion of the Vienna Underground Railway, design showing the exterior and a view of the railway platform, c.1894-97 Otto Wagner

Portrait of the Elector Palatine Otto Henry Peter Gertner

Otto von Bismarck Resigning to Emperor William II Anonymous

Statue of Prince Otto Von Bismarck Seated on a Horse Anonymous

Entrance of Otto of Bavaria into Nauplia, 6th February 1833 German School

Otto IV of Brunswick French School

He Spoke As One Who is Deeply in Earnest Anonymous

Otto van Rees. Gouverneur-generaal, Governor-General Anonymous

Otto von Bismarck, Chancellor of the Empire at the Tribune of the Reichstag, 1889 French School

Otto Beit in his study at Belgrave Square, 1913 William Orpen

Prince Otto von Bismarck on his Death Bed, 1898 Franz Seraph von Lenbach

Prince Otto von Bismarck, 1865 Adolph Friedrich Erdmann von Menzel

Copy of 'We Three' by Philipp Otto Runge Julius von Ehren

Experiment of Otto Von Guericke Anonymous

Portrait of Otto, King of Greece, 1832 Joseph Karl Stieler

Head, 1913-1914 Otto Gutfreund

Portrait of Physicist Otto von Guericke Anonymous

Tannhäuser and Venus, 1873 Anonymous

Portrait of Otto Heurnius Jacobus Lauwikius